US7431543B2 - Machine reamer - Google Patents

Machine reamer Download PDF

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Publication number
US7431543B2
US7431543B2 US10/504,502 US50450205A US7431543B2 US 7431543 B2 US7431543 B2 US 7431543B2 US 50450205 A US50450205 A US 50450205A US 7431543 B2 US7431543 B2 US 7431543B2
Authority
US
United States
Prior art keywords
tension rod
base
indexable insert
head
tension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime, expires
Application number
US10/504,502
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English (en)
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US20050220551A1 (en
Inventor
Otto Buettiker
Roman Eigenmann
Jacek Kruszynski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komet Group GmbH
Original Assignee
Dihart AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dihart AG filed Critical Dihart AG
Priority claimed from DE10224228A external-priority patent/DE10224228A1/de
Assigned to DIHART AG reassignment DIHART AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUETTIKER, OTTO, EIGENMANN, ROMAN, KRUSZYNSKI, JACEK
Publication of US20050220551A1 publication Critical patent/US20050220551A1/en
Application granted granted Critical
Publication of US7431543B2 publication Critical patent/US7431543B2/en
Assigned to KOMET DIHART AG reassignment KOMET DIHART AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DIHART AG
Assigned to KOMET GROUP GMBH reassignment KOMET GROUP GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOMET DIHART AG
Adjusted expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D77/00—Reaming tools
    • B23D77/006—Reaming tools with means for lubricating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D2277/00—Reaming tools
    • B23D2277/02—Cutting head and shank made from two different components which are releasably or non-releasably attached to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/16—Longitudinal screw clamp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
    • Y10T408/45—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product including Tool with duct
    • Y10T408/455—Conducting channel extending to end of Tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9098—Having peripherally spaced cutting edges with means to retain Tool to support
    • Y10T408/90993—Screw driven means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/30952—Milling with cutter holder

Definitions

  • the invention relates to a machine reamer comprising a shaft-like base and a reamer head, which axially projects beyond the front of the base and which is designed as a one-piece indexable insert.
  • the reamer head can be introduced into a front-side insert seat of the base with an axially projecting shoulder, and can be clamped therein by means of a tension rod, which extends axis-centrally through the base.
  • Machine reamers of this type are utilized for the precision working of cylindrical bores with the goal of a high precision in dimension and form.
  • An important characteristic of a machine reamer is the coaxiality of the reamer head in relationship to the axis of rotation.
  • the reamer head can be clamped with a conical shoulder into a complementary face-side insert seat of the base by means of a tension rod to provide the necessary coaxiality. It has, however, been shown that particularly with small sizes, a rotational catch through a conical shoulder is not automatically guaranteed. It is furthermore important for special uses that the tension rod is rotationally positioned exactly with reference to the blades of the cutting head.
  • the basic purpose of the invention is to further improve the conventional machine reamer so that a good rotational catch is guaranteed and that the tension rod can be exactly positioned in the rotational direction with reference to the reaming head.
  • the inventive solution consists most of all in the tension rod having a complementary polygonal section extending through an axis-central polygonal opening of the indexable insert.
  • a further improvement in this respect is achieved by the base also having at least in the vicinity of its insert seat a central polygonal opening, through which extends axially a complementary polygonal section of the tension rod.
  • the two polygonal sections of the tension rod advantageously follow one another directly and thereby extend in axial direction through the separation point provided between the indexable insert and the base in the area of the insert seat.
  • the tension rod has advantageously a head, which rests against a face of the indexable insert, and which is followed in axial direction by the polygonal sections.
  • a preferred embodiment of the invention provides that the tension rod head rests with a conical clamping surface against a complementary inner cone portion on the face of the indexable insert.
  • the tension rod head is dimensioned advantageously so that it is countersunk in the clamped-in state in the inner cone portion. With this measure it is achieved that even blind holes can be completely reamed down toward their base.
  • a further advantageous embodiment of the invention provides that the tension rod has an axial bore, which can be loaded with a cooling lubricant, and which ends in the area of the tension rod head in radial channels leading to the blades of the indexable insert.
  • the radial channels are thereby arranged with respect to the polygonal arrangement in the tension rod and in the indexable insert so that they penetrate on the outlet side through the conical clamping surface and end there each in an associated free space provided in front of the blades of the indexable insert.
  • the inventive cooling channel guide with a continuous cooling channel directly to the axial blade positions enables a wetting of the wall of the bore, which wetting precedes the cutting. Thus even at the highest cutting speeds a sufficient lubrication of the tool is always guaranteed. This is of a particular importance for a minimal amount of lubrication, where an oil-air mixture is used as the cooling lubricant.
  • a further advantageous embodiment of the invention provides that the base has an axis-central recess at its end not facing the insert seat, in which recess is arranged a tension nut, which can be screwed onto a thread of the tension rod.
  • the tension nut has an internal thread, which can be screwed onto an external thread of the tension rod.
  • the tension nut is thereby arranged rotatably and axially nonmovably in the recess. It is advantageously held in the recess by a snap ring.
  • the tension nut has according to a preferred embodiment of the invention a head portion axially supportable on an annular boundary surf ice of the axis-central recess and a shaft portion extending through an axial bore of the base, whereby the shaft portion carries at its free end the female thread, which can be screwed onto the thread of the tension rod. It is achieved with these measures, that the thread of the tension rod can be arranged directly behind the polygonal section and that the tension rod can thus be significantly shortened.
  • the shaft portion of the tension nut which shaft portion is preferably designed as a hollow shaft, has a greater diameter than the tension rod, and can therefore be designed longer than the tension rod with a given stiffness same. It is furthermore possible to provide inside of the hollow shaft a coolant channel with a larger dimension, which channel communicates with the axial bore in the tension rod.
  • the rigging of the tension rod is done by tightening the tension nut with the help of a screwing tool.
  • the tension nut has for this purpose a polygonal opening axially accessible from outside for the engagement by the tool.
  • the polygonal opening of the tension nut corresponds in dimensions to the polygonal opening of the indexable insert, it is possible to use the same tool to loosen the indexable insert from its frictional rigging in the base during its exchange after the tension rod has been removed.
  • the polygonal opening is for this purpose preferably designed as a hexagonal recess for the engagement by a hexagonal key or wrench.
  • FIG. 1 is a diagrammatic cross-sectional illustration of a machine reamer with an indexable insert
  • FIG. 2 a is a side view of the machine reamer according to FIG. 1 in an exploded illustration
  • FIG. 2 b is a top view of the indexable insert of the machine reamer according to FIG. 1 ;
  • FIG. 3 is a diagrammatic cross-sectional illustration of a modified exemplary embodiment of a machine reamer with an indexable insert
  • FIG. 4 a is a side view of the machine reamer according to FIG. 3 in an exploded illustration
  • FIG. 4 b is a top view of the indexable insert of the machine reamer according to FIG. 3 .
  • the machine reamers illustrated in the drawings have a base 10 designed as a shaft and a reamer head 12 axially projecting over the front of the base.
  • the reamer head 12 is designed as a one-piece indexable insert, which can be clamped with an axial rigging clearance-free and coaxially self-centering into a front-side insert seat 14 of the base 10 .
  • the indexable insert 12 which consists of a sintered cutting material, in particular of hard metal, has several cutting teeth 16 , which are arranged spaced from one another in peripheral direction, and the pitch of which is uneven. It has furthermore a conical shoulder 24 , which axially projects over a planar surface 22 , and with which it can be anchored clearance-free in the insert seat 14 .
  • the indexable insert 12 can be clamped in an insert seat 14 by means of a tension rod 44 extending through an axial bore 42 of the base 10 .
  • the tension rod 44 rests for this purpose with the cone surface 45 of its head 46 , which cone surface is coaxial with respect to the longitudinal axis of the base, against a complementary face 47 of the indexable insert 12 .
  • the tension rod 44 has an external thread 48 at its end not facing the head 46 , onto which external thread can be screwed the internal thread of the tension nut 50 , which is arranged rotatably and axially nonmovably in a recess 49 of the base 10 .
  • the rigging is done by tightening the tension nut 50 with the help of screwing tool engaging the hexagonal recess 52 .
  • the same tool can also be used to release the indexable insert from its rigging with the base 10 .
  • the tension rod 44 must for this purpose be removed first so that the polygonal opening 30 becomes accessible for the screwdrivers.
  • the tension nut 50 is held axially nonmovably in the recess 49 with the help of a snap ring 51 .
  • FIGS. 1 and 2 provides a relatively long and slender tension rod 44 , which reaches with its external thread 48 into the area of the recess 49 of the base 10 .
  • the exemplary embodiment illustrated in FIGS. 3 and 4 differs from the exemplary embodiment according to FIGS. 1 and 2 in that the tension nut 50 has a head portion 62 , which can be axis-centrally supported on an annular boundary surface 60 of the axis-central recess 49 , and a shaft portion 64 , which extends through the axial bore 42 of the base 10 .
  • the shaft portion 64 has the female thread 66 at its free end, which female thread can be screwed onto the thread 48 of the tension rod 44 .
  • the external thread 48 of the tension rod can thus be arranged directly behind the polygonal section 32 .
  • the slender tension rod 44 is thus significantly shorter than in the exemplary embodiment according to FIGS. 1 and 2 . Alltogether one obtains in this manner a more favorable configuration regarding stiffness and manufacturing costs.
  • the tension rod 44 and the tension nut 50 have an axial bore 54 , which ends in radial channel 56 in the area of the tension rod head 46 .
  • a cooling lubricant is supplied to the blades 16 of the indexable insert 12 through the axial bore 54 and the radial channels 56 .
  • the axial bore 54 communicates in the exemplary embodiment illustrated in FIGS. 3 and 4 with the inside 68 of the hollow shaft 64 . Since the inside diameter of the hollow shaft is greater than the bore diameter 54 in the tension rod, a smaller pressure drop occurs during the cooling lubricant supply in the exemplary embodiment according to FIGS. 3 and 4 .
  • the tension rod 44 has a complementary polygonal section 32 extending through an axis-central polygonal opening 30 of the indexable insert 12 .
  • This measure furthermore achieves an improvement in the rotational catch of the indexable insert 12 with the base 10 through the tension rod 44 .
  • a further improvement in this respect is achieved by the base having at least in the vicinity of its insert seat 14 a center polygonal opening, into which axially engages a complementary polygonal section 32 ′ of the tension rod.
  • the two polygonal sections 32 , 32 ′ of the tension rod follow one another directly, and penetrate in axial direction through the separation point 35 existing between the indexable insert 12 and the base 10 in the area of the insert seat 14 .
  • the tension rod 44 furthermore has a cylindrical portion 36 , which is followed at its end by the external thread 48 .
  • the invention relates to a machine reamer with a shaft-like base 10 and a reamer head, which axially projects beyond the front of the base, and is designed as a one-piece indexable insert 12 .
  • the indexable insert can be introduced into a front insert seat 14 of the base 10 with an axially projecting, preferably conical shoulder 24 , and can be clamped therein by means of a tension rod 44 , which extends axis-centrally through the base 10 .
  • the indexable insert 12 has an axis-central polygonal opening 30 , through which the tension rod extends with a complementary polygonal section 32 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Harvester Elements (AREA)
  • Magnetic Heads (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
US10/504,502 2002-02-15 2002-02-18 Machine reamer Expired - Lifetime US7431543B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10206610 2002-02-15
DE102-06-610.8 2002-02-15
DE102-24-228.3 2002-05-29
DE10224228A DE10224228A1 (de) 2002-02-15 2002-05-29 Maschinenreibahle
PCT/EP2002/014430 WO2003068439A1 (de) 2002-02-15 2002-12-18 Maschinenreibahle

Publications (2)

Publication Number Publication Date
US20050220551A1 US20050220551A1 (en) 2005-10-06
US7431543B2 true US7431543B2 (en) 2008-10-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/504,502 Expired - Lifetime US7431543B2 (en) 2002-02-15 2002-02-18 Machine reamer

Country Status (11)

Country Link
US (1) US7431543B2 (de)
EP (1) EP1474258B1 (de)
JP (1) JP3902594B2 (de)
CN (1) CN100346915C (de)
AT (1) ATE322953T1 (de)
AU (1) AU2002358152A1 (de)
DE (1) DE50206424D1 (de)
ES (1) ES2261769T3 (de)
HU (1) HUP0500523A2 (de)
PL (1) PL205033B1 (de)
WO (1) WO2003068439A1 (de)

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US20070241520A1 (en) * 2006-04-13 2007-10-18 Myers Douglas A Lathe chuck having a hollow arbor
US20110023276A1 (en) * 2009-08-03 2011-02-03 Wto Werkzeug-Einrichtungen Gmbh Tool Support with Exchangeable Tool Holders and Tool Holder
US20110262234A1 (en) * 2010-04-23 2011-10-27 Michael Schuffenhauer Coolant distributor
DE102012104606A1 (de) * 2012-05-29 2013-12-05 Franz Haimer Maschinenbau Kg Werkzeugaufnahme für ein Einschraubwerkzeug
US20150063926A1 (en) * 2013-08-30 2015-03-05 Kennametal Inc. Indexable cutting insert with coolant delivery
US20150063931A1 (en) * 2013-08-30 2015-03-05 Kennametal Inc. Indexable drill assembly and drill body having coolant supply
EP2745963B1 (de) 2012-12-19 2015-07-15 Seco Tools Ab Ankopplung für ein Kühlungssystem in einem Schneidwerkzeug
US9643264B2 (en) 2013-07-25 2017-05-09 Kennametal Inc. Coupling mechanism for cutting tool
US9643262B2 (en) 2013-07-25 2017-05-09 Kennametal Inc. Coupling mechanism for cutting tool
US9669478B2 (en) 2013-02-22 2017-06-06 Ceratizit Austria Gmbh Milling tool
USD798922S1 (en) 2015-10-07 2017-10-03 Kennametal Inc. Cutting head for rotary drill
USD798921S1 (en) 2015-10-07 2017-10-03 Kennametal Inc. Cutting head for modular drill
US9889509B2 (en) 2014-05-05 2018-02-13 Kennametal Inc. Cutter heads with improved coupling
US9937567B2 (en) 2015-10-07 2018-04-10 Kennametal Inc. Modular drill
US10040132B2 (en) 2015-06-24 2018-08-07 Kennametal Inc. Rotary tool, in particular a drill for such a rotary tool
US10052698B2 (en) 2013-10-15 2018-08-21 Kennametal Inc. Modular carrier tool and tool head
US10058930B2 (en) 2013-04-03 2018-08-28 Kennametal Inc. Tool head for rotary cutting tool and rotary cutting tool including same
US10071430B2 (en) 2015-10-07 2018-09-11 Kennametal Inc. Cutting head, rotary tool and support for the rotary tool and for the accommodation of the cutting head
US10213845B2 (en) 2014-04-08 2019-02-26 Kennametal Inc. Rotary tool, in particular a drill, and a cutting head for said rotary tool
US10537943B2 (en) 2017-03-27 2020-01-21 Kennametal Inc Modular rotary tool and modular tool system
US10799958B2 (en) 2017-08-21 2020-10-13 Kennametal Inc. Modular rotary cutting tool
US11565356B2 (en) 2017-07-13 2023-01-31 Kennametal Inc. Method for producing a cutting head
US11911830B2 (en) 2019-06-13 2024-02-27 Kennametal India Ltd. Indexable drilling inserts
WO2024095255A1 (en) 2022-11-01 2024-05-10 Iscar Ltd. Replaceable cutting head, tool holder and morse taper rotary cutting tool having fastening member

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DE102005031683A1 (de) * 2005-07-05 2007-01-25 Dihart Ag Maschinenwerkzeug
JP4967863B2 (ja) * 2007-07-05 2012-07-04 三菱マテリアル株式会社 穴加工工具
DE202007015595U1 (de) * 2007-11-07 2008-01-31 Gühring Ohg Rotierendes Schaftwerkzeug, insbesondere Stufenreibahle
CH705550A1 (fr) * 2011-09-16 2013-03-28 Chirmat Sarl Outil chirurgical pour l'alésage du canal diaphysaire d'os longs.
JP6251514B2 (ja) 2013-08-21 2017-12-20 株式会社フルヤ金属 摩擦攪拌接合用ツール
US10105771B2 (en) * 2016-03-21 2018-10-23 Iscar, Ltd. Rotary cutting tool having tool holder with conical internal thread and replaceable cutting head with straight external thread, and said tool holder
US20180099337A1 (en) * 2016-10-08 2018-04-12 Ray Fitzgerald Woods Devices for Broken Drill Bit Removal

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US2867140A (en) * 1955-12-15 1959-01-06 Metal Cutting Tools Inc Core drill
US2995963A (en) 1960-03-31 1961-08-15 Lavallee & Ide Inc Shell reamers
US3087360A (en) * 1960-07-19 1963-04-30 Waldo L Garberding Cutting tool having universal joint
US3320833A (en) 1964-11-23 1967-05-23 Detroit Reamer & Tool Company Deep-hole drill and reamer
US4166711A (en) * 1977-01-22 1979-09-04 Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress Kg Chucking reamer with replaceable cutter
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US4929131A (en) * 1989-03-24 1990-05-29 Westhoff Toll And Die Company Method and apparatus for a lineal machine tool
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EP0734803A2 (de) 1995-03-29 1996-10-02 Joh. & Ernst Link GmbH & Co. KG Drehantreibbares Werkzeug sowie Werkzeugkopf zur Verwendung bei einem solchen Werkzeug
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Cited By (29)

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EP1474258A1 (de) 2004-11-10
EP1474258B1 (de) 2006-04-12
ATE322953T1 (de) 2006-04-15
JP3902594B2 (ja) 2007-04-11
PL205033B1 (pl) 2010-03-31
PL369843A1 (en) 2005-05-02
WO2003068439A1 (de) 2003-08-21
DE50206424D1 (de) 2006-05-24
US20050220551A1 (en) 2005-10-06
CN100346915C (zh) 2007-11-07
ES2261769T3 (es) 2006-11-16
HUP0500523A2 (hu) 2005-08-29
JP2005525941A (ja) 2005-09-02
CN1620351A (zh) 2005-05-25
AU2002358152A1 (en) 2003-09-04

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